Title :
Sensorless detection of free-falling state of a HDD by monitoring electromechanical signal of a spindle motor
Author :
Jang, G.H. ; Park, S.J.
Author_Institution :
PREM Lab., Hanyang Univ., Seoul, South Korea
Abstract :
This research proposes a sensorless detection method of a free-falling condition of a HDD before unexpected shock by monitoring the electromechanical signals of a HDD spindle motor. The electromechanically coupled simulation presents the theoretical background and the simulation result is verified by the experiment.
Keywords :
disc drives; electric motors; hard discs; HDD free-falling state; HDD spindle motor; electromechanical signal monitoring; electromechanically coupled simulation; sensorless detection; unexpected shock; Brushless DC motors; DC motors; Electromagnetic fields; Finite element methods; Hydrodynamics; Magnetic heads; Maxwell equations; Monitoring; Pulse width modulation; Torque;
Conference_Titel :
Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International
Print_ISBN :
0-7803-9009-1
DOI :
10.1109/INTMAG.2005.1463799
